The Aport-211S is an easy-to-use Serial-to-Ethernet gateway which is designed for applications requiring quick, reliable and seamless integration of existing RS-232C/RS-422 or RS-485 devices to an Ethernet network. The Aport-211S provides a transparent data channel between serial device and the TCP/IP network, so that the serial device can be accessed by using standard TCP/IP protocols. The Ethernet port will operate at 10/100Mbps and the speed is auto-selected. An eight bit TTL-level bidirectional port is also available.